Replaces the placeholder Metrics shim with a prom-client implementation
in src/observability/metrics.ts: all 10 Phase 1 metrics from the wiki
spec, plus nodejs_* defaults. Exposes /metrics, /healthz, /readyz over
node:http on METRICS_PORT (9090); /readyz returns 503 when Redis status
is not 'ready' or the TCP listener isn't bound.
The Metrics interface in src/core/types.ts is unchanged — adapter call
sites continue to use the same inc/observe shape. Only main.ts sees the
extended type that adds serializeMetrics().
Side effects:
- Dockerfile re-enables HEALTHCHECK pointing at /readyz, and EXPOSE 9090.
- frame-ingested log downgraded back to debug now that
teltonika_records_published_total is scrapeable.
- 19 new unit tests covering exposition format, all metric types, and
every HTTP endpoint path. Total now 98 passing.
Note: deploy/compose.yaml still does not expose 9090 — separate decision
about how Prometheus reaches the service (host port vs. internal scraper
on the same Docker network).
- Multi-stage Dockerfile (Node 22 alpine, BuildKit cache, non-root user).
HEALTHCHECK and metrics port (9090) deferred until task 1.10 ships;
comments document the resume.
- .gitea/workflows/build.yml — single build job following the pattern
of other TRM repos (no services/container, ubuntu-latest direct).
Tests + typecheck + lint inline; image tagged :main.
- compose.dev.yaml — local-build variant for verifying Dockerfile
changes pre-push. Production deploy lives in the sibling deploy/ repo.
- .env.example documenting all runtime env vars.
- README updated to point at deploy/ for production and explain CI.
- Task 1.11 marked done (slim variant) in ROADMAP and task file.
Tasks 1.1-1.9 marked done with their landing commit SHAs. Tasks 1.10
(observability), 1.12 (production hardening), and 1.13 (device
authority) marked paused with explicit resume triggers — pilot
deployment on real Teltonika hardware takes priority. Task 1.11
remains as next, in slimmed form for the pilot (no /readyz healthcheck
since the metrics endpoint is part of paused 1.10).
julian